Electroplating bath for simultaneous deposition of metal and a permanent solid lubricant

Abstract

The disadvantages of difficulty in operation of the bath and unfavorable physical properties obtained with the simultaneous deposition of metal and a permanent solid lubricant in electroplating baths of conventional composition and containing solid lubricant particles and a perfluorized compound acting as a cationic tenside are avoided if, instead of the perfluorized compound, the bath contains ##STR1## where A 1 -A 9 is H or an alkyl radical with low C number, R 1 -R 9 is H, OH or an alkyl radical with low C number, X is a halogen or SO 4 and n is the valency of X. Preferred solid lubricants are polytetrafluoroethylene, graphite, graphite fluoride or molybdenumdisulfide.

What is claimed is: 
     
       1. An aqueous electroplating bath containing solid lubricant particles and a water soluble surfactant which, at the pH of the electroplating bath, exhibits cationic properties, for simultaneous deposition of at least one metal and a permanently lubricating solid lubricant, in which, the water-soluble, cationic surfactant is a compound consisting essentially of ##STR7## where A 1  -A 9  is H or an alkyl radical, R 1  -R 9  is H, OH or an alkyl radical, X is a halogen or SO 4  and n is the valency of X. 
     
     
       2. Electroplating bath according to claim 1, in which the water-soluble, cationic surfactant is a compound consisting essentially of ##STR8## 
     
     
       3. Electroplating bath according to claim 1, in which the water soluble, cationic surfactant is a compound consisting essentially of ##STR9## 
     
     
       4. Electroplating bath according to claim 1, in which X is Br. 
     
     
       5. Electroplating bath according to claim 1, in which X is Cl. 
     
     
       6. Electroplating bath according to claim 1, in which the solid lubricant is selected from the group consisting of polytetrafluorethylene, graphite, graphite fluoride and molybdenumdisulfide. 
     
     
       7. Electroplating bath according to claim 6, in which the solid lubricant particles are 3-6 μm in size. 
     
     
       8. Electroplating bath according to claim 1, in which the bath additionally contains at least one of phosphoric acid and a salt of phosphoric acid. 
     
     
       9. Electroplating bath according to claim 1, in which the bath additionally contains at least one of hypophosphoric acid and a salt of hypophosphoric acid. 
     
     
       10. Electroplating bath according to claim 1, wherein said bath is used to manufacture cobalt-nickel-phosphorus coatings having solid lubricant particles incorporated therein.